[PATCH -perfbook v2 1/3] Work around conflict between arydshln and array v2.6

Version 2.6 of array.sty released along with LaTeX2e <2024-06-01>
is not compatible with arydshln's assumption of internal behavior
of array.

Stick to a compatible version of array by adding \RequirePackage{array}
with a rollback option.

Use of date as in [=2024-05-01] makes the LaTeX code compatible
with earlier installation of TeX Live, where the latex engine can pick
a suitable version available.

Signed-off-by: Akira Yokosawa <[email protected]>
---
I have tried to contact arydshln package maintainer, but failed to
get any response so far.

---
 perfbook-lt.tex | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/perfbook-lt.tex b/perfbook-lt.tex
index fd598a56..ad4463be 100644
--- a/perfbook-lt.tex
+++ b/perfbook-lt.tex
@@ -9,6 +9,9 @@
 % within a page. See: https://tex.stackexchange.com/questions/183149/
 \ifdefined\pdfsuppresswarningpagegroup \pdfsuppresswarningpagegroup=1 \fi
 
+% Work around conflict between arydshln and array since array v2.6c
+\RequirePackage{array}[=2024-05-01] % One month before the release date of v2.6c
+
 % standard packages
 
 % A more pleasant font
-- 
2.34.1